Glass resin laminate

ABSTRACT

Provided is a glass resin laminate ( 1 ), including: a resin layer ( 2 ); a glass sheet ( 3 ); an adhesive layer ( 4 ) configured to bond the glass sheet ( 3 ) and the resin layer ( 2 ); and a functional film ( 5 ) interposed in the adhesive layer ( 4 ). The adhesive layer ( 4 ) includes a first portion ( 4   a ) positioned between the resin layer ( 2 ) and the functional film ( 5 ), a second portion ( 4   b ) positioned between the glass sheet ( 3 ) and the functional film ( 5 ), and a fused portion ( 4   c ) obtained by fusing an end portion of the first portion ( 4   a ) and an end portion of the second portion ( 4   b ).

TECHNICAL FIELD

The present invention relates to a glass resin laminate obtained bylaminating a glass sheet and a resin layer.

BACKGROUND ART

As is well known, glass is excellent in weather resistance, chemicalresistance, and scratch resistance, but by contrast, has a drawback inthat the glass is liable to break owing to physical impact or thermalimpact. In order to solve the drawback, for example, a glass resinlaminate obtained by bonding a resin layer to one surface, or each ofboth surfaces, of a glass sheet has been proposed. A resin is inferiorin weather resistance, chemical resistance, and scratch resistance tothe glass, but by contrast, has an advantage in that the resin has aspecific gravity smaller than that of the glass and is strong againstthe physical impact. Accordingly, in the glass resin laminate,respective demerits in the glass sheet and the resin layer can becompensated with their respective merits. In addition, the laminate canbe significantly reduced in weight as compared to a glass sheet havingthe same thickness.

Further, in recent years, a glass resin laminate configured to exhibitfunctions suitable for various applications by interposing a functionalfilm between a glass sheet and a resin layer has been developed. In, forexample, Patent Literature 1, there is a disclosure of a glass resinlaminate obtained by: laminating glass sheets on both surfaces of aresin layer via adhesive layers to integrate the layer and the sheets;and arranging an intermediate sheet in the adhesive layer on at leastone surface side of the resin layer. The intermediate sheet in the glassresin laminate has various functions, such as an infrared ray-shieldingfunction, an electromagnetic wave-shielding function, and a designproperty.

A specific configuration of the glass resin laminate is described withreference to FIG. 10. A glass resin laminate 101 illustrated in FIG. 10includes a resin layer 102, glass sheets 103, adhesive layers 104, andan intermediate sheet (functional film) 105. One of the adhesive layers104 includes a first portion 104 a and a second portion 104 b formed insheet shapes. The intermediate sheet 105 is arranged between the firstportion 104 a and the second portion 104 b. In addition, theintermediate sheet 105 has the same dimensions as those of the resinlayer 102 and the glass sheets 103, and is brought into a state in whichits end surface 105 a is exposed.

CITATION LIST

Patent Literature 1: JP 2016-117191 A

SUMMARY OF INVENTION Technical Problem

When the end surface 105 a of the intermediate sheet 105 is exposed asdescribed above, the intermediate sheet 105 may be affected by moisturein air, or the end surface 105 a may be damaged to cause the functionalloss of the intermediate sheet 105 or the peeling of the intermediatesheet 105 starting from the end surface 105 a.

The present invention has been made in view of the above-mentionedcircumstances, and a technical object of the present invention is toprevent the functional loss and peeling of a functional film in a glassresin laminate.

Solution to Problem

According to one embodiment of the present invention, which has beenmade in order to achieve the above-mentioned object, there is provided aglass resin laminate, comprising: a resin layer; a glass sheet; anadhesive layer configured to bond the glass sheet and the resin layer;and a functional film interposed in the adhesive layer, wherein theadhesive layer comprises a first portion positioned between the resinlayer and the functional film, a second portion positioned between theglass sheet and the functional film, and a fused portion obtained byfusing an end portion of the first portion and an end portion of thesecond portion.

With such configuration, the end portion of the functional film iscovered with the fused portion of the first portion and the secondportion in the adhesive layer, and hence the end portion of thefunctional film can be formed so as to be prevented from being exposedin the end portion of the glass resin laminate. Therefore, the endsurface of the functional film is prevented from being brought intocontact with outside air and being damaged by its contact with foreignmatter. Thus, the functional loss and peeling of the functional film canbe reliably prevented.

It is desired that an area of the functional film be set to be smallerthan an area of the glass sheet, and an end portion of the functionalfilm be arranged inside with respect to an end portion of the glasssheet. When the end portion of the functional film is arranged insidewith respect to the end portion of the glass sheet as described above,the entirety of the functional film can be covered and protected withthe glass sheet.

It is desired that an area of the glass sheet be set to be smaller thanan area of the resin layer, and an end portion of the glass sheet bearranged inside with respect to an end portion of the resin layer. Withthis, damage to the end portion of the glass sheet due to its contactwith foreign matter can be prevented.

It is preferred that the fused portion be exposed between the endportion of the resin layer and the end portion of the glass sheet. Thus,not only the end portion of the functional film but also the end portionof the glass sheet can be suitably protected with the fused portion.

In the glass resin laminate having the above-mentioned configuration, itis appropriate that the resin layer comprise a first surface and asecond surface, the glass sheet comprise a first glass sheet laminatedon the first surface and a second glass sheet laminated on the secondsurface, the adhesive layer comprise a first adhesive layer configuredto bond the first glass sheet to the first surface and a second adhesivelayer configured to bond the second glass sheet to the second surface,and the functional film be interposed in at least one of the firstadhesive layer or the second adhesive layer.

In the glass resin laminate having the above-mentioned configuration, itis also appropriate that the functional film comprise a first functionalfilm interposed in the first adhesive layer and a second functional filminterposed in the second adhesive layer. When the glass resin laminatecomprises the plurality of functional films, the laminate hasmultifunctionality.

Advantageous Effects of Invention

According to the present invention, the functional loss and peeling ofthe functional film in the glass resin laminate can be prevented.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a sectional view of a glass resin laminate according to afirst embodiment.

FIG. 2 is a plan view of the glass resin laminate.

FIG. 3 is a side view for illustrating one step of a method ofmanufacturing the glass resin laminate.

FIG. 4 is a side view for illustrating one step of the method ofmanufacturing the glass resin laminate.

FIG. 5 is a sectional view for illustrating one step of the method ofmanufacturing the glass resin laminate.

FIG. 6 is a sectional view for illustrating one step of the method ofmanufacturing the glass resin laminate.

FIG. 7 is a sectional view of a glass resin laminate according to asecond embodiment.

FIG. 8 is a sectional view of a glass resin laminate according to athird embodiment.

FIG. 9 is a sectional view of a glass resin laminate according to afourth embodiment.

FIG. 10 is a sectional view for illustrating a related-art glass resinlaminate.

DESCRIPTION OF EMBODIMENTS

Embodiments of the present invention are described below with referenceto the drawings. FIG. 1 to FIG. 6 are illustrations of a glass resinlaminate according to a first embodiment of the present invention and amanufacturing method therefor.

As illustrated in FIG. 1, a glass resin laminate 1 comprises: a resinlayer 2; a glass sheet 3 laminated on a first surface 2 a of the resinlayer 2; an adhesive layer 4 configured to bond the glass sheet 3 to theresin layer 2; and a functional film 5 interposed in the adhesive layer4.

As illustrated in FIG. 2, the glass resin laminate 1 is formed in asquare shape, but is not limited to this shape. The resin layer 2, theglass sheet 3, the adhesive layer 4, and the functional film 5 areformed in square shapes in correspondence with the shape of the glassresin laminate 1. In the glass resin laminate 1 according to thisembodiment, the area of the resin layer 2 is largest, the area of theglass sheet 3 is second largest, and the area of the functional film 5is smallest. The area of the adhesive layer 4 is set to be comparable tothe area of the resin layer 2.

Therefore, as illustrated in FIG. 2, a length dimension D1 of one sideof the resin layer 2 is longer than a length dimension D2 of one side ofthe glass sheet 3. A length dimension D3 of one side of the adhesivelayer 4 is substantially equal to the length dimension D1 of one side ofthe resin layer 2. A length dimension D4 of one side of the functionalfilm 5 is shorter than the length dimension D2 of one side of the glasssheet 3.

A difference (D1-D2) between the length dimension D1 of one side of theresin layer 2 and the length dimension D2 of one side of the glass sheet3 is preferably set to 4 mm or less. An interval W1 between one side ofthe resin layer 2 and the corresponding one side of the glass sheet 3 isset to preferably 2mm or less, more preferably 1 mm or more and 2mm orless. In addition, a difference (D2-D4) between the length dimension D2of one side of the glass sheet 3 and the length dimension D4 of one sideof the functional film 5 is preferably set to 4 mm or less. An intervalW2 between one side of the glass sheet 3 and the corresponding one sideof the functional film 5 is set to preferably 2mm or less, morepreferably 1 mm or more and 2mm or less.

The resin layer 2 has the first surface 2 a, a second surface 2 b, andan end portion (end surface) 2 c between the first surface 2 a and thesecond surface 2 b. The resin layer 2 is formed of a plate or film madeof a resin in which the first surface 2 a and the second surface 2 bhave substantially the same area. In this embodiment, the glass sheet 3is laminated on the first surface 2 a of the resin layer 2. Thethickness of the resin layer 2 is set to preferably 0.01 mm or more and20 mm or less, more preferably 0.05 mm or more and 15 mm or less, mostpreferably 0.1 mm or more and 10 mm or less.

As a material for the resin layer 2, polycarbonate and a polymethylmethacrylate resin (PMMA) are preferred. In addition, various resinmaterials, such as polyethylene terephthalate, polyether ether ketone(PEEK), polyamide, polyvinyl chloride, polyethylene, polypropylene, andpolyethylene naphthalate, maybe utilized.

The glass sheet 3 has a first surface 3 a bonded to the resin layer 2, asecond surface 3 b positioned opposite to the first surface 3 a, and anend portion (end surface) 3 c formed between the first surface 3 a andthe second surface 3 b.

The first surface 3 a of the glass sheet 3 is bonded to the firstsurface 2 a of the resin layer 2 with the adhesive layer 4. The secondsurface 3 b of the glass sheet 3 forms the outer surface of the glassresin laminate 1. The end portion 3 c of the glass sheet 3 is coveredwith the adhesive layer 4. The glass sheet 3 is positioned in the rangeof the first surface 2 a or second surface 2 b of the resin layer 2.Therefore, the end portion 3 c of the glass sheet 3 is arranged insidewith respect to the end portion 2 c of the resin layer 2. Herein, the“inside” of the resin layer 2 refers to the inside of the rangepartitioned by the peripheral portion of the resin layer 2. In thisembodiment, the peripheral portion of the resin layer 2 comprises thefour sides of the resin layer 2 formed in a square shape.

It is preferred that the glass sheet 3 be thin as compared to the resinlayer 2, and the thickness thereof is set to 1,000 μm or less,preferably 10 μm or more and 700 μm or less, more preferably 50 μm ormore and 500 μm or less.

As a material for the glass sheet 3, there may be used silicate glassand silica glass, preferably borosilicate glass, soda lime glass,aluminosilicate glass, and chemical tempered glass, most preferablyalkali-free glass. When the alkali-free glass is used as the glass sheet3, chemically stable glass can be obtained. Herein, the alkali-freeglass refers to glass substantially free of an alkali component (alkalimetal oxide), specifically glass having a weight ratio of the alkalicomponent of 3,000 ppm or less. In the present invention, the weightratio of the alkali component is preferably 1,000 ppm or less, morepreferably 500 ppm or less, most preferably 300 ppm or less.

It is desired that the Young's modulus of the glass sheet 3 be as highas possible so that the glass sheet 3 has such moderate stiffness thatthe glass sheet 3 does not bend largely even when its thickness isreduced to 300 μm or less. From such viewpoint, the Young's modulus ofthe glass sheet 3 is set to 50 GPa or more, preferably 60 GPa or more,most preferably 70 GPa or more.

A float method, a roll-out method, a slot down-draw method, a redrawmethod, and the like, which have hitherto been known, may be used forthe glass sheet 3, but the glass sheet 3 is preferably formed by anoverflow down-draw method. The overflow down-draw method is a method inwhich a molten glass is poured into an overflow groove provided on anupper portion of a forming body having a substantially wedge crosssection, and the molten glasses overflowing from the overflow groove toboth sides are caused to flow down along side wall portions of theforming body on both sides to be fused and integrated with each other atthe lower end of the forming body, to thereby continuously form a sheetof glass.

A large number of glass sheets 3 having a thickness of 300 μm or lesscan be produced by the overflow down-draw method at a low cost. For theglass sheet 3 thus produced, it is not necessary to adjust the thicknessof the glass sheet 3 by polishing, grinding, chemical etching, or thelike. In addition, the overflow down-draw method is a forming method inwhich both surfaces of the glass sheet 3 are not brought into contactwith the forming body during forming. Thus, both the surfaces(translucent surfaces) of the obtained glass sheet 3 serve asfire-polished surfaces, and high surface quality can be achieved withoutpolishing. With this, the adhesive force of the adhesive layer 4 to theglass sheet 3 can be increased, and the glass sheet 3 and the resinlayer 2 can be laminated more accurately and precisely.

The thickness of the adhesive layer 4 is set to 1 μm or more and 1,000μm or less. As a material for the adhesive layer 4, there may besuitably used, for example, an ethylene-vinyl acetate copolymer resin(EVA), a polyvinyl butyral resin (PVB), and a UV-curing resin. Inaddition, an acrylic pressure-sensitive adhesive, a urethane-basedadhesive, a silicone-based pressure-sensitive adhesive, a rubber-basedpressure-sensitive adhesive, a UV-curable acrylic adhesive, a UV-curableepoxy-based adhesive, a thermosetting epoxy-based adhesive, athermosetting melamine-based adhesive, a thermosetting phenol-basedadhesive, and the like may be used.

The adhesive layer 4 has a first portion 4 a positioned between theresin layer 2 and the functional film 5, and a second portion 4 bpositioned between the glass sheet 3 and the functional film 5. Thefunctional film 5 is interposed in the adhesive layer 4, that is,between the first portion 4 a and the second portion 4 b. The endportion of the first portion 4 a and the end portion of the secondportion 4 b are fused to be integrally formed. The portion ishereinafter referred to as “fused portion”, and is represented byreference symbol 4 c.

The fused portion 4 c covers the functional film 5 so that an endportion 5 a of the functional film 5 may not be exposed. That is, thefunctional film 5 is arranged between the first portion 4 a and secondportion 4 b of the adhesive layer 4, and hence its entirety is coveredwith the adhesive layer 4. In addition, the fused portion 4 c is exposedbetween the end portion 2 c of the resin layer 2 and the end portion 3 cof the glass sheet 3.

As illustrated in FIG. 1 and FIG. 2, the functional film 5 is positionedin the range of the first surface 3 a and second surface 3 b of theglass sheet 3. Thus, the end portion 5 a of the functional film 5 isarranged inside with respect to the end portion 3 c of the glass sheet3. The “inside” of the glass sheet 3 refers to the inside of the rangepartitioned by the peripheral portion of the glass sheet 3. In thisembodiment, the peripheral portion of the glass sheet 3 comprises thefour sides of the glass sheet 3 formed in a square shape.

The thickness of the functional film is preferably 0.012 mm or more and0.3 mm or less, more preferably 0.038 mm or more and 0.2 mm or less,still more preferably 0.05 mm or more and 0.1 mm or less. The thicknessof the functional film is preferably smaller than the thickness of theadhesive layer 4.

The functional film 5 is preferably formed of a resin. A polyester, anolefin, a polycarbonate, an acryl, or the like is used as the resin.When transparency or smoothness is required, a PET is preferably used asthe functional film 5, and when heat resistance or a light-shieldingproperty is required, a polypropylene, a polycarbonate, or the like ispreferably used as the functional film 5.

The functional film 5 may be paper formed of pulp or the like. Paper hasbeen in widespread use for typing and design printing, and is hencesuitable for the purpose of information display or design display. Inaddition, paper is generally semi-transmissive, and hence can impart alight-adjusting function of adjusting the quantity of transmitted lightpassing through the glass resin laminate 1. The glass resin laminate 1using paper as the functional film 5 may be suitably used as a buildingmaterial, such as a partition, a stair, or a panel for the wall surfaceof a veranda, through the exploitation of such characteristic.

The functional film 5 may be a composite sheet obtained by compositing apaper raw material with a resin, such as a polyester. When the compositesheet is used, there is an advantage in that the sheet hardly breaks andhardly causes dust generation at the time of the manufacture of theglass resin laminate 1. In addition, there is an advantage in that anadhesive property between the functional film 5 and the adhesive layer 4is improved.

The functional film 5 may be a product obtained by printing a pattern orthe like on a substrate, such as a resin sheet. In this case, paperquality can be reproduced by printing even without the use of paper, ora design property that cannot be represented with paper can be impartedto the film. A nonwoven fabric may be used as the functional film 5.

When a design property is imparted to the functional film 5, a productobtained by printing a woodgrain or metallic pattern on a substrate,such as a resin sheet, may be used. In this case, the film may besuitably used as a building material, furniture, or a covering memberfor equipment. When the woodgrain or metallic pattern is printed, anon-transmissive sheet, such as a polypropylene, is preferably used asthe substrate. When the functional film 5 having printed thereon ametallic pattern is used, metallic gloss can be reproduced by the glossof the glass sheet 3.

The functional film 5 may have a physical function instead of the designproperty or in addition to the design property. The functional film 5may have, for example, an infrared ray-shielding function. In this case,the film may be suitably used as a heat-shielding window or aheat-shielding wall. A method of imparting the infrared ray-shieldingfunction to the functional film 5 is, for example, the formation of afilm configured to absorb or reflect an infrared ray on the surface of aresin sheet, such as a PET, serving as a substrate.

The functional film 5 may have an electromagnetic wave-shieldingfunction. In this case, the film may be suitably used as a window orwall configured to shield an electromagnetic wave harmful to a humanbody or an electromagnetic wave that is not required for theenvironment. Specifically, the film is considered to find use in medicalfacilities. A method of imparting the electromagnetic wave-shieldingfunction to the functional film 5 is, for example, the formation of atransparent conductive film, such as an ITO film or a copper film, onthe surface of a resin sheet, such as a PET, serving as a substrate.

The functional film 5 may have semi-transmissivity to visible rays. Inthis case, the film maybe suitably used as a covering member for variouskinds of equipment or a partition. A method of imparting thesemi-transmissivity to the functional film 5 is, for example, theroughening of the surface of a resin sheet, such as a PET, bysandblasting treatment, chemical treatment, or the like in addition tothe use of paper or a product similar to paper as the functional film 5as described above. When such treatment is performed, the transmissivityof light maybe adjusted by changing the roughness of the surface of thesheet or by subjecting one surface, or both surfaces, thereof to thesurface roughening treatment.

The functional film 5 may have a function of reflecting visible rays. Inthis case, the film may be used as a safe and lightweight mirror. Amethod of imparting the reflecting function to the film is, for example,the formation of a reflective film on the surface of a substrate, suchas a resin sheet. The formation range of the reflective film may be theentirety of the surface, or may be part of the surface. In addition, ahalf mirror may be provided by imparting semi-transmissivity to thereflective film.

The functional film 5 may have a sensor pattern concerning a touchsensor, a pressure sensor, an optical sensor, or the like. The sensorpattern is formed on the surface of the functional film 5 by deposition,sputtering, or any other film formation method.

The method of manufacturing the glass resin laminate 1 having theabove-mentioned configuration is described below with reference to FIG.3 to FIG. 6. As illustrated in FIG. 3, the respective components formingthe glass resin laminate 1, that is, the resin layer 2 (resin plate),the glass sheet 3, the adhesive layer 4 (adhesive sheets), and thefunctional film 5 are prepared (preparing step). In this case, theadhesive layer 4 comprises an adhesive sheet corresponding to the firstportion 4 a and an adhesive sheet corresponding to the second portion 4b . The thickness of the adhesive sheet corresponding to the firstportion 4 a is set to be larger than the thickness of the adhesive sheetcorresponding to the second portion 4 b, but is not limited thereto.

Next, as illustrated in FIG. 4, the respective components 2 to 5 aresuperimposed. At this time, the functional film 5 is brought into astate of being sandwiched between the adhesive sheet corresponding tothe first portion 4 a and the adhesive sheet corresponding to the secondportion 4 b in the adhesive layer 4. After that, under a state in whichthe respective components 2 to 5 are superimposed, the components aresubjected to thermal pressure bonding with an autoclave apparatus to bebonded to one another. The adhesive layer 4 (the first portion 4 a andthe second portion 4 b) is softened by the heating, and hence its endportions are fused (see FIG. 5). Thus, the fused portion 4 c is formedin the adhesive layer 4. The fused portion 4 c covers the end portion 5a of the functional film 5, and is brought into a state of being exposedbetween the end portion 2 c of the resin layer 2 and the end portion 3 cof the glass sheet 3.

In addition, under a state in which the adhesive layer 4 is softened bythe heating, the glass sheet 3 is pressed to be embedded in one surfaceof the first portion 4 a of the adhesive layer 4 (see FIG. 5). Thus, theend portion 3 c of the glass sheet 3 is covered with the fused portion 4c of the adhesive layer 4.

After that, as illustrated in FIG. 6, part of the fused portion 4 c iscut off with a cutter 6. The cutter 6 is heated in advance so that itstemperature may be equal to or more than the temperature of the fusedportion 4 c that has been softened. Part of the fused portion 4 c is cutoff with the cutter 6 so that the fused portion 4 c may be a convexcurved surface (see a two-dot chain line in FIG. 6). The glass resinlaminate 1 illustrated in FIG. 1 is completed by the curing of theadhesive layer 4.

When the glass resin laminate 1 is manufactured by using a UV-curableadhesive (UV-curing resin), the adhesive applied so as to comprise thefunctional film 5 in an inside thereof is irradiated with UV lightwithout the use of any autoclave apparatus.

According to the glass resin laminate 1 according to this embodimentdescribed above, the end portion 5 a of the functional film 5 arrangedbetween the resin layer 2 and the glass sheet 3 is covered with thefused portion 4 c of the adhesive layer 4, and hence the end portion 5 acan be protected without being exposed. Thus, the functional loss andpeeling of the functional film 5 in the glass resin laminate 1 can bereliably prevented. In addition, the end portion 5 a of the functionalfilm 5 is arranged inside with respect to the end portion 3 c of theglass sheet 3, and hence the functional film 5 can be entirely coveredand protected with the glass sheet 3.

FIG. 7 is an illustration of a glass resin laminate according to asecond embodiment. In the first embodiment described above, the lengthdimension D4 of one side of the functional film 5 is set to be smallerthan the length dimension D2 of one side of the glass sheet 3. In thisembodiment, however, the length dimension D4 is set to be larger thanthe length dimension D2. In addition, as in the first embodiment, thelength dimension D4 of one side of the functional film 5 is set to besmaller than the length dimension D1 of one side of the resin layer 2.As in the first embodiment, the end portion 5 a of the functional film 5is covered with the fused portion 4 c of the adhesive layer 4 exposedbetween the end portion 2 c of the resin layer 2 and the end portion 3 cof the glass sheet 3.

FIG. 8 is an illustration of a glass resin laminate according to a thirdembodiment. In the first embodiment described above, the one functionalfilm 5 is interposed in the adhesive layer 4. In this embodiment,however, two functional films 5A and 5B are interposed in the adhesivelayer 4. The functional films 5A and 5B comprise the first functionalfilm 5A positioned on the resin layer 2 side and the second functionalfilm 5B positioned on the glass sheet 3 side. The first functional film5A and the second functional film 5B are of the same shape herein, butmay have different dimensions. The first functional film 5A and thesecond functional film 5B have functions different from each other.

The adhesive layer 4 comprises: the first portion 4 a configured to bondthe resin layer 2 and the first functional film 5A; the second portion 4b configured to bond the glass sheet 3 and the second functional film5B; and a third portion 4 d configured to bond the first functional film5A and the second functional film 5B. The adhesive layer 4 has the fusedportion 4 c obtained by fusing the end portion of the first portion 4 a,the end portion of the second portion 4 b, and the end portion of thethird portion 4 d. The end portion 5 a of the first functional film 5Aand the end portion 5 a of the second functional film 5B are coveredwith the fused portion 4 c.

FIG. 9 is an illustration of a glass resin laminate according to afourth embodiment. In the first embodiment described above, the oneglass sheet 3 is laminated on the first surface 2 a of the resin layer2. However, the glass resin laminate 1 according to this embodiment isobtained by laminating two glass sheets 3A and 3B on both the firstsurface 2 a and second surface 2 b of the resin layer 2. That is, theglass sheets 3A and 3B comprise the first glass sheet 3A laminated onthe first surface 2 a of the resin layer 2 and the second glass sheet 3Blaminated on the second surface 2 b thereof. Materials of the same kindmay be used in the first glass sheet 3A and the second glass sheet 3B,or materials of different kinds may be used therein. The first glasssheet 3A and the second glass sheet 3B may have different thicknesses inaccordance with their applications.

Adhesive layers 4A and 4B comprise: the first adhesive layer 4Aconfigured to bond the first glass sheet 3A to the first surface 2 a ofthe resin layer 2; and the second adhesive layer 4B configured to bondthe second glass sheet 3B to the second surface 2 b thereof. As in thefirst embodiment, each of the adhesive layers 4A and 4B has the firstportion 4 a, the second portion 4 b, and the fused portion 4 c.

The functional films 5A and 5B comprise the first functional film 5Ainterposed in the first adhesive layer 4A and the second functional film5B interposed in the second adhesive layer 4B. The end portions 5 a ofthe respective functional films 5A and 5B are covered with the fusedportions 4 c of the corresponding respective adhesive layers 4A and 4B.

The present invention is not limited to the configurations of theabove-mentioned embodiments. In addition, the action and effect of thepresent invention are not limited to those described above. The presentinvention may be modified in various forms within the range notdeparting from the spirit of the present invention.

In each of the above-mentioned embodiments, the glass resin laminate 1of a square shape is given as an example. However, its shape is notlimited thereto. The glass resin laminate 1 may be formed in variousshapes, such as a circular shape, a rectangle, a polygon, and a deformedshape, in accordance with its applications.

Reference Signs List

-   1 glass resin laminate-   2 resin layer-   2 a first surface-   2 b second surface-   2 c end portion of resin layer-   3 glass sheet-   3A first glass sheet-   3B second glass sheet-   3 c end portion of glass sheet-   4 adhesive layer-   4A first adhesive layer-   4B second adhesive layer-   4 a first portion-   4 b second portion-   4 c fused portion-   5 functional film-   5A first functional film-   5B second functional film-   5 a end portion of functional film

1. A glass resin laminate, comprising: a resin layer; a glass sheet; anadhesive layer configured to bond the glass sheet and the resin layer;and a functional film interposed in the adhesive layer, wherein theadhesive layer comprises a first portion positioned between the resinlayer and the functional film, a second portion positioned between theglass sheet and the functional film, and a fused portion obtained byfusing an end portion of the first portion and an end portion of thesecond portion.
 2. The glass resin laminate according to claim 1,wherein an area of the functional film is set to be smaller than an areaof the glass sheet, and wherein an end portion of the functional film isarranged inside with respect to an end portion of the glass sheet. 3.The glass resin laminate according to claim 1, wherein an area of theglass sheet is set to be smaller than an area of the resin layer, andwherein an end portion of the glass sheet is arranged inside withrespect to an end portion of the resin layer.
 4. The glass resinlaminate according to claim 3, wherein the fused portion is exposedbetween the end portion of the resin layer and the end portion of theglass sheet.
 5. The glass resin laminate according to claim 1, whereinthe resin layer comprises a first surface and a second surface, whereinthe glass sheet comprises a first glass sheet laminated on the firstsurface and a second glass sheet laminated on the second surface,wherein the adhesive layer comprises a first adhesive layer configuredto bond the first glass sheet to the first surface and a second adhesivelayer configured to bond the second glass sheet to the second surface,and wherein the functional film is interposed in at least one of thefirst adhesive layer or the second adhesive layer.
 6. The glass resinlaminate according to claim 5, wherein the functional film comprises afirst functional film interposed in the first adhesive layer and asecond functional film interposed in the second adhesive layer.
 7. Theglass resin laminate according to claim 2, wherein an area of the glasssheet is set to be smaller than an area of the resin layer, and whereinan end portion of the glass sheet is arranged inside with respect to anend portion of the resin layer.
 8. The glass resin laminate according toclaim 7, wherein the fused portion is exposed between the end portion ofthe resin layer and the end portion of the glass sheet.
 9. The glassresin laminate according to claim 2, wherein the resin layer comprises afirst surface and a second surface, wherein the glass sheet comprises afirst glass sheet laminated on the first surface and a second glasssheet laminated on the second surface, wherein the adhesive layercomprises a first adhesive layer configured to bond the first glasssheet to the first surface and a second adhesive layer configured tobond the second glass sheet to the second surface, and wherein thefunctional film is interposed in at least one of the first adhesivelayer or the second adhesive layer.
 10. The glass resin laminateaccording to claim 3, wherein the resin layer comprises a first surfaceand a second surface, wherein the glass sheet comprises a first glasssheet laminated on the first surface and a second glass sheet laminatedon the second surface, wherein the adhesive layer comprises a firstadhesive layer configured to bond the first glass sheet to the firstsurface and a second adhesive layer configured to bond the second glasssheet to the second surface, and wherein the functional film isinterposed in at least one of the first adhesive layer or the secondadhesive layer.
 11. The glass resin laminate according to claim 4,wherein the resin layer comprises a first surface and a second surface,wherein the glass sheet comprises a first glass sheet laminated on thefirst surface and a second glass sheet laminated on the second surface,wherein the adhesive layer comprises a first adhesive layer configuredto bond the first glass sheet to the first surface and a second adhesivelayer configured to bond the second glass sheet to the second surface,and wherein the functional film is interposed in at least one of thefirst adhesive layer or the second adhesive layer.
 12. The glass resinlaminate according to claim 9, wherein the functional film comprises afirst functional film interposed in the first adhesive layer and asecond functional film interposed in the second adhesive layer.
 13. Theglass resin laminate according to claim 10, wherein the functional filmcomprises a first functional film interposed in the first adhesive layerand a second functional film interposed in the second adhesive layer.14. The glass resin laminate according to claim 11, wherein thefunctional film comprises a first functional film interposed in thefirst adhesive layer and a second functional film interposed in thesecond adhesive layer.